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DeepSeek-VL2/deepseek_vl2/models/processing_deepseek_vl_v2.py

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2024-12-13 07:38:59 -05:00
# Copyright (c) 2023-2024 DeepSeek.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
# the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
from dataclasses import dataclass
from typing import Dict, Tuple, List, Literal, Optional
import math
import torch
from torch.nn.utils.rnn import pad_sequence
import torchvision.transforms as T
from transformers import LlamaTokenizerFast
from transformers.processing_utils import ProcessorMixin
from PIL import Image, ImageOps
from .conversation import get_conv_template
def select_best_resolution(image_size, candidate_resolutions):
# used for cropping
original_width, original_height = image_size
best_fit = None
max_effective_resolution = 0
min_wasted_resolution = float("inf")
for width, height in candidate_resolutions:
scale = min(width / original_width, height / original_height)
downscaled_width, downscaled_height = int(original_width * scale), int(original_height * scale)
effective_resolution = min(downscaled_width * downscaled_height, original_width * original_height)
wasted_resolution = (width * height) - effective_resolution
if effective_resolution > max_effective_resolution or (effective_resolution == max_effective_resolution and wasted_resolution < min_wasted_resolution):
max_effective_resolution = effective_resolution
min_wasted_resolution = wasted_resolution
best_fit = (width, height)
return best_fit
class DictOutput(object):
def keys(self):
return self.__dict__.keys()
def __getitem__(self, item):
return self.__dict__[item]
def __setitem__(self, key, value):
self.__dict__[key] = value
# 对于inference sample也可以维护input_ids，反正最后不会用到
@dataclass
class VLChatProcessorOutput(DictOutput):
sft_format: str
input_ids: torch.LongTensor
target_ids: torch.LongTensor
images: torch.Tensor
images_seq_mask: torch.BoolTensor
images_spatial_crop: torch.LongTensor
num_image_tokens: List[int]
def __len__(self):
return len(self.input_ids)
@dataclass
class BatchCollateOutput(DictOutput):
sft_format: List[str]
input_ids: torch.LongTensor
labels: torch.LongTensor
images: torch.Tensor
attention_mask: torch.Tensor
images_seq_mask: torch.BoolTensor
images_spatial_crop: torch.LongTensor
seq_lens: List[int]
def to(self, device, dtype=torch.bfloat16):
self.input_ids = self.input_ids.to(device)
self.labels = self.labels.to(device)
self.attention_mask = self.attention_mask.to(device)
self.images_seq_mask = self.images_seq_mask.to(device)
self.images_spatial_crop = self.images_spatial_crop.to(device)
self.images = self.images.to(device=device, dtype=dtype)
return self
class ImageTransform(object):
def __init__(
self,
mean: Optional[Tuple[float, float, float]] = (0.5, 0.5, 0.5),
std: Optional[Tuple[float, float, float]] = (0.5, 0.5, 0.5),
normalize: bool = True
):
self.mean = mean
self.std = std
self.normalize = normalize
transform_pipelines = [
T.ToTensor()
]
if normalize:
transform_pipelines.append(T.Normalize(mean, std))
self.transform = T.Compose(transform_pipelines)
def __call__(self, pil_img: Image.Image):
x = self.transform(pil_img)
return x
class DeepseekVLV2Processor(ProcessorMixin):
tokenizer_class = ("LlamaTokenizer", "LlamaTokenizerFast")
attributes = ["tokenizer"]
def __init__(
self,
tokenizer: LlamaTokenizerFast,
candidate_resolutions: Tuple[Tuple[int, int]],
patch_size: int,
downsample_ratio: int,
image_mean: Tuple[float, float, float] = (0.5, 0.5, 0.5),
image_std: Tuple[float, float, float] = (0.5, 0.5, 0.5),
normalize: bool = True,
image_token: str = "<image>",
pad_token: str = "<｜▁pad▁｜>",
add_special_token: bool = False,
sft_format: str = "deepseek",
mask_prompt: bool = True,
ignore_id: int = -100,
**kwargs,
):
self.candidate_resolutions = candidate_resolutions
self.image_size = candidate_resolutions[0][0]
self.patch_size = patch_size
self.image_mean = image_mean
self.image_std = image_std
self.normalize = normalize
self.downsample_ratio = downsample_ratio
self.image_transform = ImageTransform(mean=image_mean, std=image_std, normalize=normalize)
self.tokenizer = tokenizer
self.tokenizer.padding_side = 'left' # must set this，padding side with make a difference in batch inference
# add the pad_token as special token to use 'tokenizer.pad_token' and 'tokenizer.pad_token_id'
if tokenizer.pad_token is None:
self.tokenizer.add_special_tokens({'pad_token': pad_token})
print(f"Add pad token = ['{pad_token}'] to the tokenizer\n"
f"{pad_token}:{tokenizer.encode(pad_token, add_special_tokens=False)[0]}")
# add image token
image_token_id = self.tokenizer.vocab.get(image_token)
if image_token_id is None:
special_tokens = [image_token]
special_tokens_dict = {"additional_special_tokens": special_tokens}
self.tokenizer.add_special_tokens(special_tokens_dict)
self.image_token_id = self.tokenizer.vocab.get(image_token)
print(f"Add image token = ['{image_token}'] to the tokenizer\n"
f"{image_token}:{tokenizer.encode(image_token, add_special_tokens=False)[0]}")
# add five special tokens for grounding-related tasks
# <|ref|>, <|/ref|>, <|det|>, <|/det|>, <|grounding|>
special_tokens = ['<|ref|>', '<|/ref|>', '<|det|>', '<|/det|>', '<|grounding|>']
special_tokens_dict = {"additional_special_tokens": special_tokens}
self.tokenizer.add_special_tokens(special_tokens_dict)
print(f"Add grounding-related tokens = {special_tokens} to the tokenizer with input_ids\n"
f"<|ref|>:{tokenizer.encode('<|ref|>', add_special_tokens=False)[0]}\n"
f"<|/ref|>:{tokenizer.encode('<|/ref|>', add_special_tokens=False)[0]}\n"
f"<|det|>:{tokenizer.encode('<|det|>', add_special_tokens=False)[0]}\n"
f"<|/det|>:{tokenizer.encode('<|/det|>', add_special_tokens=False)[0]}\n"
f"<|grounding|>:{tokenizer.encode('<|grounding|>', add_special_tokens=False)[0]}")
# add special tokens for SFT data
special_tokens = ["<|User|>", "<|Assistant|>"]
special_tokens_dict = {"additional_special_tokens": special_tokens}
self.tokenizer.add_special_tokens(special_tokens_dict)
print(f"Add chat tokens = {special_tokens} to the tokenizer with input_ids\n"
f"<|User|>:{tokenizer.encode('<|User|>', add_special_tokens=False)[0]}\n"
f"<|Assistant|>:{tokenizer.encode('<|Assistant|>', add_special_tokens=False)[0]}\n")
self.image_token = image_token
self.pad_token = pad_token
self.add_special_token = add_special_token
self.sft_format = sft_format
self.mask_prompt = mask_prompt
self.ignore_id = ignore_id
super().__init__(
tokenizer,
**kwargs,
)
def new_chat_template(self):
conv = get_conv_template(self.sft_format)
return conv
def format_messages(
self,
conversations: List[Dict[str, str]],
sft_format: str = "deepseek",
system_prompt: str = "",
):
"""
Applies the SFT template to conversation.
Args:
conversations (List[Dict]): A List of messages.
sft_format (str, optional): The format of the SFT template to use. Defaults to "deepseek".
system_prompt (str, optional): The system prompt to use in the SFT template. Defaults to "".
Returns:
sft_prompt (str): The formatted text.
"""
conv = get_conv_template(sft_format)
conv.set_system_message(system_prompt)
for message in conversations:
conv.append_message(message["role"], message["content"].strip())
sft_prompt = conv.get_prompt().strip()
return sft_prompt
def format_messages_v2(self, messages, pil_images, systems=None):
"""play the role of format_messages_v2 and get_images_info in the last version"""
tokenized_data = []
masked_tokenized_data = [] # labels
images_list = []
images_seq_mask = []
images_spatial_crop = []
num_image_tokens = []
image_index = 0
conv = get_conv_template(self.sft_format)
conv_system_message = conv.system_message
for idx, message in enumerate(messages):
if idx == 0:
tokenized_data += [self.bos_id]
masked_tokenized_data += [self.bos_id]
images_seq_mask += [False]
conv.system_message = conv_system_message
else:
conv.system_message = ''
if message['role'] == conv.roles[0] or message['role'] == "user":
conv.reset_message()
conv.append_message(conv.roles[0], str(message['content']).strip())
conv.append_message(conv.roles[1], '')
formatted_question = conv.get_prompt()
tokenized_str, images, seq_mask, spatial_crop, n_image_tokens = self.tokenize_with_images(
formatted_question,
pil_images[image_index: image_index + formatted_question.count(self.image_token)],
bos=False,
eos=False,
cropping=len(pil_images) <= 2
)
image_index += formatted_question.count(self.image_token)
tokenized_data += tokenized_str
if self.mask_prompt:
masked_tokenized_data += [self.ignore_id] * len(tokenized_str)
else:
masked_tokenized_data += tokenized_str
images_list += images
images_seq_mask += seq_mask
images_spatial_crop += spatial_crop
num_image_tokens += n_image_tokens
elif message['role'] == conv.roles[1] or message['role'] == "assistant":
formatted_answer = message['content'].strip()
assert formatted_answer.count(
self.image_token) == 0, f"there should be no {self.image_token} in the assistant's reply, but got {messages}"
tokenized_str, images, seq_mask, spatial_crop, n_image_tokens = self.tokenize_with_images(
formatted_answer,
[],
bos=False,
eos=True,
cropping=len(pil_images) <= 2)
tokenized_data += tokenized_str
masked_tokenized_data += tokenized_str
images_seq_mask += seq_mask
elif message['role'] == 'system' or message['role'] == 'deepseekapi-sys':
# 如果message里面有system，那就只允许出现在message的第一句，同时conv原本的system就会失效
assert idx == 0, 'system information should only exist in the begining of the conversation'
formatted_system = message['content'].strip()
tokenized_str = self.encode(formatted_system, bos=False, eos=False)
tokenized_data += tokenized_str
if self.mask_prompt:
masked_tokenized_data += [self.ignore_id] * len(tokenized_str)
else:
masked_tokenized_data += tokenized_str
seq_mask = [False] * len(tokenized_str)
images_seq_mask += seq_mask
else:
assert False, f"Unknown role: {message['role']}"
assert len(tokenized_data) == len(
images_seq_mask), f"format_messages_v2: tokenized_str's length {len(tokenized_str)} is not equal to imags_seq_mask's length {len(images_seq_mask)}"
assert len(images_spatial_crop) == len(num_image_tokens), f"image number should be compatible"
return tokenized_data, masked_tokenized_data, images_list, images_seq_mask, images_spatial_crop, num_image_tokens
def format_prompts(
self,
prompts: str,
sft_format: str = "deepseek",
system_prompt: str = "",
):
"""
Applies the SFT template to prompts.
Args:
prompts (str): the non-sft formatted prompt;
sft_format (str, optional): The format of the SFT template to use. Defaults to "deepseek".
system_prompt (str, optional): The system prompt to use in the SFT template. Defaults to "".
Returns:
sft_prompt (str): The formatted text.
"""
conv = get_conv_template(sft_format)
conv.set_system_message(system_prompt)
conv.append_message(conv.roles[0], prompts.strip())
conv.append_message(conv.roles[1], "")
sft_prompt = conv.get_prompt().strip()
return sft_prompt
@property
def bos_id(self):
return self.tokenizer.bos_token_id
@property
def eos_id(self):
return self.tokenizer.eos_token_id
@property
def pad_id(self):
return self.tokenizer.pad_token_id
def encode(self, text: str, bos: bool = True, eos: bool = False):
t = self.tokenizer.encode(text, add_special_tokens=False)
if bos:
t = [self.bos_id] + t
if eos:
t = t + [self.eos_id]
return t
def decode(self, t: List[int], **kwargs) -> str:
return self.tokenizer.decode(t, **kwargs)
def process_one(
self,
prompt: str = None,
conversations: List[Dict[str, str]] = None,
images: List[Image.Image] = None,
apply_sft_format: bool = False,
inference_mode: bool = True,
system_prompt: str = "",
**kwargs,
):
"""
Args:
prompt (str): the formatted prompt;
conversations (List[Dict]): conversations with a list of messages;
images (List[ImageType]): the list of images;
apply_sft_format (bool): if prompt is not None, then apply the SFT format to prompt;
if conversations is not None, then it will always apply the SFT format to conversations;
inference_mode (bool): if True, then remove the last eos token;
system_prompt (str): the system prompt;
**kwargs:
Returns:
outputs (BaseProcessorOutput): the output of the processor,
- input_ids (torch.LongTensor): [N + image tokens]
- target_ids (torch.LongTensor): [N + image tokens]
- images (torch.FloatTensor): [n_images, 3, H, W]
- image_id (int): the id of the image token
- num_image_tokens (List[int]): the number of image tokens
"""
assert (
prompt is None or conversations is None
), "prompt and conversations cannot be used at the same time."
if prompt is None:
# apply sft format
sft_format = self.format_messages(
conversations=conversations,
sft_format=self.sft_format,
system_prompt=system_prompt,
)
tokenized_str, masked_tokenized_str, images_list, images_seq_mask, images_spatial_crop, num_image_tokens = self.format_messages_v2(
conversations, images)
else:
if apply_sft_format:
sft_format = self.format_prompts(
prompts=prompt,
sft_format=self.sft_format,
system_prompt=system_prompt
)
else:
sft_format = prompt
tokenized_str, images_list, images_seq_mask, images_spatial_crop, num_image_tokens = self.tokenize_with_images(
sft_format, images, bos=True, eos=True, cropping=len(images) <= 2)
masked_tokenized_str = []
for token_index in tokenized_str:
if token_index != self.image_token_id:
masked_tokenized_str.append(token_index)
else:
masked_tokenized_str.append(self.ignore_id)
assert len(tokenized_str) == len(images_seq_mask) == len(masked_tokenized_str), \
(f"tokenized_str's length {len(tokenized_str)}, input_ids' length {len(masked_tokenized_str)}, "
f"imags_seq_mask's length {len(images_seq_mask)}, are not equal")
input_ids = torch.LongTensor(tokenized_str)
target_ids = torch.LongTensor(masked_tokenized_str)
images_seq_mask = torch.tensor(images_seq_mask, dtype=torch.bool)
# set input_ids < 0 | input_ids == self.image_token_id as ignore_id
target_ids[(input_ids < 0) | (input_ids == self.image_token_id)] = self.ignore_id
input_ids[input_ids < 0] = self.pad_id
if inference_mode:
# 去掉结尾的eos token
assert input_ids[-1] == self.eos_id
input_ids = input_ids[:-1]
target_ids = target_ids[:-1]
images_seq_mask = images_seq_mask[:-1]
if len(images_list) == 0:
images = torch.zeros((1, 3, self.image_size, self.image_size))
images_spatial_crop = torch.zeros((1, 2), dtype=torch.long)
else:
images = torch.stack(images_list, dim=0)
images_spatial_crop = torch.tensor(images_spatial_crop, dtype=torch.long)
prepare = VLChatProcessorOutput(
sft_format=sft_format,
input_ids=input_ids,
target_ids=target_ids,
images=images,
images_seq_mask=images_seq_mask,
images_spatial_crop=images_spatial_crop,
num_image_tokens=num_image_tokens
)
return prepare
def __call__(
self,
*,
prompt: str = None,
conversations: List[Dict[str, str]] = None,
images: List[Image.Image] = None,
apply_sft_format: bool = False,
force_batchify: bool = True,
inference_mode: bool = True,
system_prompt: str = "",
**kwargs,
):
"""
Args:
prompt (str): the formatted prompt;
conversations (List[Dict]): conversations with a list of messages;
images (List[ImageType]): the list of images;
apply_sft_format (bool): if prompt is not None, then apply the SFT format to prompt;
if conversations is not None, then it will always apply the SFT format to conversations;
force_batchify (bool): force batchify the inputs;
inference_mode (bool): if True, then remove the last eos token;
system_prompt (str): the system prompt;
**kwargs:
Returns:
outputs (BaseProcessorOutput): the output of the processor,
- input_ids (torch.LongTensor): [N + image tokens]
- images (torch.FloatTensor): [n_images, 3, H, W]
- image_id (int): the id of the image token
- num_image_tokens (List[int]): the number of image tokens
"""
prepare = self.process_one(
prompt=prompt,
conversations=conversations,
images=images,
apply_sft_format=apply_sft_format,
inference_mode=inference_mode,
system_prompt=system_prompt
)
if force_batchify:
prepare = self.batchify([prepare])
return prepare
def tokenize_with_images(
self,
conversation: str,
images: List[Image.Image],
bos: bool = True,
eos: bool = True,
cropping: bool = True,
):
"""Tokenize text with <image> tags."""
assert conversation.count(self.image_token) == len(images)
text_splits = conversation.split(self.image_token)
images_list, images_seq_mask, images_spatial_crop = [], [], []
num_image_tokens = []
tokenized_str = []
for text_sep, image in zip(text_splits, images):
"""encode text_sep"""
tokenized_sep = self.encode(text_sep, bos=False, eos=False)
tokenized_str += tokenized_sep
images_seq_mask += [False] * len(tokenized_sep)
"""select best resolution for anyres"""
if cropping:
best_width, best_height = select_best_resolution(image.size, self.candidate_resolutions)
else:
best_width, best_height = self.image_size, self.image_size
# print(image.size, (best_width, best_height)) # check the select_best_resolutions func
"""process the global view"""
global_view = ImageOps.pad(image, (self.image_size, self.image_size),
color=tuple(int(x * 255) for x in self.image_transform.mean))
images_list.append(self.image_transform(global_view))
"""process the local views"""
local_view = ImageOps.pad(image, (best_width, best_height),
color=tuple(int(x * 255) for x in self.image_transform.mean))
for i in range(0, best_height, self.image_size):
for j in range(0, best_width, self.image_size):
images_list.append(
self.image_transform(local_view.crop((j, i, j + self.image_size, i + self.image_size))))
change module name to deepseek_vl2
2024-12-17 02:42:09 -05:00
Initial commit
2024-12-13 07:38:59 -05:00
"""record height / width crop num"""
num_width_tiles, num_height_tiles = best_width // self.image_size, best_height // self.image_size
images_spatial_crop.append([num_width_tiles, num_height_tiles])
"""add image tokens"""
h = w = math.ceil((self.image_size // self.patch_size) / self.downsample_ratio)
# global views tokens h * (w + 1), 1 is for line seperator
tokenized_image = [self.image_token_id] * h * (w + 1)
# add a seperator between global and local views
tokenized_image += [self.image_token_id]
# local views tokens, (num_height_tiles * h) * (num_width_tiles * w + 1)
tokenized_image += [self.image_token_id] * (num_height_tiles * h) * (num_width_tiles * w + 1)
tokenized_str += tokenized_image
images_seq_mask += [True] * len(tokenized_image)
num_image_tokens.append(len(tokenized_image))
# print(width_crop_num, height_crop_num, len(tokenized_image)) # test the correctness of the number of image-related tokens
"""process the last text split"""
tokenized_sep = self.encode(text_splits[-1], bos=False, eos=False)
tokenized_str += tokenized_sep
images_seq_mask += [False] * len(tokenized_sep)
"""add the bos and eos tokens"""
if bos:
tokenized_str = [self.bos_id] + tokenized_str
images_seq_mask = [False] + images_seq_mask
if eos:
tokenized_str = tokenized_str + [self.eos_id]
images_seq_mask = images_seq_mask + [False]
assert len(tokenized_str) == len(
images_seq_mask), f"tokenize_with_images func: tokenized_str's length {len(tokenized_str)} is not equal to imags_seq_mask's length {len(images_seq_mask)}"
return tokenized_str, images_list, images_seq_mask, images_spatial_crop, num_image_tokens
def batchify(
self,
sample_list: List[VLChatProcessorOutput],
padding: Literal["left", "right"] = "left"
) -> BatchCollateOutput:
"""
Preprocesses the inputs for multimodal inference.
Args:
sample_list (List[VLChatProcessorOutput]): A list of VLChatProcessorOutput.
padding (str): The padding method. Defaults to "left".
Returns:
BatchCollateOutput: A dictionary of the inputs to use for multimodal inference.
"""
batched_sft_format = [sample.sft_format for sample in sample_list]
batched_input_ids = [sample.input_ids for sample in sample_list]
batched_labels = [sample.target_ids for sample in sample_list]
batched_images_seq_mask = [sample["images_seq_mask"] for sample in sample_list]
seq_lens = [len(sample) for sample in sample_list]
"""padding input_ids and images_seq_mask"""
if padding == "left":
# the tokenizer is default to pad at left
## TODO, You're using a LlamaTokenizerFast tokenizer.
# Please note that with a fast tokenizer, using the `__call__` method is faster than
# using a method to encode the text followed by a call to the `pad` method to get a padded encoding.
padded_input_ids = self.tokenizer.pad({"input_ids": batched_input_ids})
batched_input_ids, batched_attention_mask = padded_input_ids["input_ids"], padded_input_ids[
"attention_mask"].bool()
batched_labels = self.tokenizer.pad({"input_ids": batched_labels})["input_ids"]
batched_labels[batched_labels == self.pad_id] = self.ignore_id # labels正常不会出现pad_id，无需额外保护
batched_images_seq_mask = self.tokenizer.pad({"input_ids": batched_images_seq_mask})["input_ids"]
batched_images_seq_mask[batched_images_seq_mask == self.pad_id] = False
else:
batched_input_ids = pad_sequence(batched_input_ids, batch_first=True, padding_value=self.pad_id)
batched_labels = pad_sequence(batched_labels, batch_first=True, padding_value=self.ignore_id)
batched_images_seq_mask = pad_sequence(batched_images_seq_mask, batch_first=True, padding_value=0)
batched_attention_mask = batched_input_ids != self.pad_id
"""padding images to max_patch_num"""
max_n_patches = max(sample["images"].shape[0] for sample in sample_list)
batched_images = []
for sample in sample_list:
images = sample["images"]
n_pads = max_n_patches - images.shape[0]
if n_pads > 0:
pad_images = torch.zeros((n_pads, *images.shape[1:]), dtype=images.dtype)
images = torch.cat([images, pad_images], dim=0)
batched_images.append(images)
batched_images = torch.stack(batched_images, dim=0)
"""padding images_spatial_crop to max_n_images"""
max_n_images = max(sample["images_spatial_crop"].shape[0] for sample in sample_list)
batched_images_spatial_crop = []
for sample in sample_list:
images_spatial_crop = sample["images_spatial_crop"]
n_pads = max_n_images - sample["images_spatial_crop"].shape[0]
if n_pads > 0:
pad_images_spatial_crop = torch.full((n_pads, 2), 0, dtype=images_spatial_crop.dtype)
images_spatial_crop = torch.cat([images_spatial_crop, pad_images_spatial_crop], dim=0)
batched_images_spatial_crop.append(images_spatial_crop)
batched_images_spatial_crop = torch.stack(batched_images_spatial_crop, dim=0)
batched_samples = BatchCollateOutput(
input_ids=batched_input_ids,
attention_mask=batched_attention_mask,
labels=batched_labels,
images=batched_images,
images_seq_mask=batched_images_seq_mask,
images_spatial_crop=batched_images_spatial_crop,
sft_format=batched_sft_format,
seq_lens=seq_lens
)
return batched_samples
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